Microsoft.Azure.WebJobs.Extensions.SimpleInjector

SimpleInjector extensions for cleaner DI setup in Azure WebJobs

Set up

static void Main()
    {
        var config = new JobHostConfiguration();

      
            config.UseDevelopmentSettings();
        

        config.UseTimers();
        config.UseSimpleInjector(DITestRegistrations.Register, "I'm the additional param", new AsyncScopedLifestyle());

        var host = new JobHost(config);
        // The following code ensures that the WebJob will be running continuously
        host.RunAndBlock();
    }  

The following code snippet shows the extension method on the JobHostConfiguration which takes in an Action<object> where your DI registrations should live. Passing it a new AsyncScopedLifestyle does not set any of the default lifestyles of the container. All this does is create an explicit scoped lifestyle when your functions are called and disposes your lifestyle. If your DI classes are all singletons then just pass it a null and the extensions will not bother creating explicit scopes.

Inject services into function

 // This function will get triggered/executed when a new message is written 
    // on an Azure Queue called queue.
    public static void ProcessQueueMessage([TimerTrigger("0 59 23 * * *", RunOnStartup = true)] //At 11:59PM
    TimerInfo info, ICancelWroBoxProcess process)
    {

            process.Begin();
    }

In the above scenario, the ICancelWroBoxProcess will be injected. If you fail to register a service and attempt to inject it, you will receive an exception. Please create a unit test for your DI registrations.